<template>
  <div>

    <div style="margin: 10px 0">
      <el-input style="width: 200px" placeholder="请输入学号" suffix-icon="el-icon-search" v-model="studentId"></el-input>
      <el-input style="width: 200px" placeholder="请输入姓名" suffix-icon="el-icon-message" class="ml-5" v-model="name"></el-input>
      <el-input style="width: 200px" placeholder="请输入班级" suffix-icon="el-icon-position" class="ml-5" v-model="studentClass"></el-input>
      <el-button class="ml-5-5" type="primary" @click="load" style="margin-left: 5px;">搜索 <i class="el-icon-search"></i></el-button>
      <el-button type="warning" style="margin-left: 5px;" @click="reset">重置 <i class="el-icon-refresh"></i></el-button>
    </div>

    <div style="margin: 10px 0">
      <el-button type="primary" @click="handleAdd">新增 <i class="el-icon-circle-plus-outline"></i></el-button>
      <el-popconfirm
          class="ml-5"
          confirm-button-text='确定'
          cancel-button-text='我再想想'
          icon="el-icon-info"
          icon-color="red"
          title="您确定批量删除这些数据吗？"
          @confirm="delBatch"
      >
        <el-button class="ml-5" type="danger" slot="reference">批量删除 <i class="el-icon-remove-outline"></i></el-button>
      </el-popconfirm>
      <el-upload action="http://localhost:8081/user/import" :show-file-list="false" accept="xlsx" :on-success="handleExcelImportSuccess" style="display: inline-block" class="ml-5">
        <el-button type="primary" class="ml-5">导入 <i class="el-icon-bottom"></i></el-button>
      </el-upload>
      <el-button type="primary" style="margin-left: 5px;" @click="exportExcel">导出 <i class="el-icon-top"></i></el-button>
    </div>

    <el-table :data="tableData" border stripe :header-cell-class-name="'headerBg'"  @selection-change="handleSelectionChange">
      <el-table-column type="selection" width="55"></el-table-column>
      <el-table-column prop="studentId" label="学号" width="100"></el-table-column>
      <el-table-column prop="name" label="姓名" width="80"></el-table-column>
      <el-table-column prop="age" label="年龄" width="50"></el-table-column>
      <el-table-column prop="sex" label="性别" width="50"></el-table-column>
      <el-table-column prop="grade" label="年级" width="50"></el-table-column>
      <el-table-column prop="major" label="专业" width="150"></el-table-column>
      <el-table-column prop="studentClass" label="班级" width="170"></el-table-column>
      <el-table-column prop="origin" label="住址"></el-table-column>
      <el-table-column prop="phone" label="联系电话" width="100"></el-table-column>
      <el-table-column label="操作"  width="200" align="center">
        <template slot-scope="scope">
          <el-button type="success" @click="handleEdit(scope.row)">编辑 <i class="el-icon-edit"></i></el-button>
          <el-popconfirm
              class="ml-5"
              confirm-button-text='确定'
              cancel-button-text='我再想想'
              icon="el-icon-info"
              icon-color="red"
              title="您确定删除吗？"
              @confirm="del(scope.row.id)"
          >
            <el-button type="danger" slot="reference">删除 <i class="el-icon-remove-outline"></i></el-button>
          </el-popconfirm>
        </template>
      </el-table-column>
    </el-table>

    <div style="padding: 10px 0">
      <el-pagination
          @size-change="handleSizeChange"
          @current-change="handleCurrentChange"
          :current-page="pageNum"
          :page-sizes="[5, 10, 15, 20]"
          :page-size="pageSize"
          layout="total, sizes, prev, pager, next, jumper"
          :total="total">
      </el-pagination>
    </div>

    <el-dialog title="用户信息" :visible.sync="dialogFormVisible" width="30%" >
      <el-form label-width="80px" size="small">
        <el-form-item label="用户名">
          <el-input v-model="form.username" autocomplete="off"></el-input>
        </el-form-item>
        <el-form-item label="昵称">
          <el-input v-model="form.nickname" autocomplete="off"></el-input>
        </el-form-item>
        <el-form-item label="邮箱">
          <el-input v-model="form.email" autocomplete="off"></el-input>
        </el-form-item>
        <el-form-item label="电话">
          <el-input v-model="form.phone" autocomplete="off"></el-input>
        </el-form-item>
        <el-form-item label="地址">
          <el-input v-model="form.address" autocomplete="off"></el-input>
        </el-form-item>
      </el-form>

      <div slot="footer" class="dialog-footer">
        <el-button @click="dialogFormVisible = false">取 消</el-button>
        <el-button type="primary" @click="save">确 定</el-button>
      </div>

    </el-dialog>
  </div>
</template>

<script>
export default {
  name: "Student",
  data(){
    return{
      tableData: [],
      total: 0,
      pageNum: 1,
      pageSize: 5,
      studentId: "",
      nickname: "",
      name: "",
      phone: "",
      studentClass: "",
      form: {},
      dialogFormVisible: false,
      multipleSelection: [],
    }
  },
  created() {
    this.load()
  },
  methods:{
    load() {
      if (this.studentId!=='' || this.name!=='' || this.studentClass!==''){
        this.pageNum = 1;
      }
      this.axios.get("http://localhost:8081/student/select", {
        params: {
          pageNum: this.pageNum,
          pageSize: this.pageSize,
          studentId: this.studentId,
          name: this.name,
          studentClass: this.studentClass
        }
      }).then(res => {
        console.log(res.data.data)
        this.tableData = res.data.data.data
        this.total = res.data.data.total
      })
    },
    toTableLast(){
      this.pageNum = Math.trunc((this.total / this.pageSize) + 1)
      this.load()
    },
    save() {
      this.axios.post("http://localhost:8081/user/save", this.form).then(res => {
        if (res) {
          this.$message.success("保存成功")
          this.dialogFormVisible = false
          this.toTableLast()
        } else {
          this.$message.error("保存失败")
        }
      })
    },
    handleAdd() {
      this.dialogFormVisible = true
      this.form = {}
    },
    handleEdit(row) {
      this.form = row
      this.dialogFormVisible = true
    },
    del(id) {
      this.axios.delete("http://localhost:8081/user/delete/" + id).then(res => {
        if (res) {
          this.$message.success("删除成功")
          this.load()
        } else {
          this.$message.error("删除失败")
        }
      })
    },
    handleSelectionChange(val) {
      this.multipleSelection = val
    },
    delBatch() {
      let ids = this.multipleSelection.map(v => v.id)
      this.axios.post("http://localhost:8081/user/batch/delete", ids).then(res => {
        if (res) {
          this.$message.success("批量删除成功")
          this.pageNum = 1
          this.load()
        } else {
          this.$message.error("批量删除失败")
        }
      })
    },
    reset() {
      this.studentId = ""
      this.name = ""
      this.studentClass = ""
      this.pageNum = 1
      this.load()
    },
    handleSizeChange(pageSize) {
      this.pageSize = pageSize
      this.load()
    },
    handleCurrentChange(pageNum) {
      this.pageNum = pageNum
      this.load()
    },
    exportExcel() {
      window.open("http://localhost:8081/user/export")
    },
    handleExcelImportSuccess() {
      this.$message.success("导入成功")
      this.load();
    }
  }
}
</script>